MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 57f4597c8c57bf72047b12adba0ba8eee1e1bf7bf97a35e7798f2e2f3dca83b7. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry



Threat unknown


Vendor detections: 5


Intelligence 5 IOCs YARA 1 File information Comments

SHA256 hash: 57f4597c8c57bf72047b12adba0ba8eee1e1bf7bf97a35e7798f2e2f3dca83b7
SHA3-384 hash: 22adc9ff117db0f619a2a32523de066e8d9a509cf549da634c07facb996e9d70de9565bb3509789360f2d67489ce9999
SHA1 hash: 78b6deb3f6b02c8898d1dc6209d8daf8c1b4416b
MD5 hash: c21f8bfa8a5fdeefbb1618abcbce0308
humanhash: mockingbird-earth-muppet-don
File name:payload_1.xls
Download: download sample
File size:2'516 bytes
First seen:2026-04-13 13:02:48 UTC
Last seen:Never
File type:Excel file xls
MIME type:application/x-ole-storage
ssdeep 12:rl3baFqzH5gCUTs2ACZ9A5ol0sNYKhQk7/0dX:rtH5nAZEqnh77/0
TLSH T195512B803220DA18C5914A7ECD82DB845736FE11FD42D3573071334F5D765A00D52667
Magika unknown
Reporter smica83
Tags:CVE-2026-21509 xls

Office OLE Information


This malware samples appears to be an Office document. The following table provides more information about this document using oletools and oledump.

OLE dump

MalwareBazaar was able to identify 2 sections in this file using oledump:

Section IDSection sizeSection name
1432 bytesCONTENTS
212 bytesRichEditFlags

Intelligence


File Origin
# of uploads :
1
# of downloads :
128
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
payload_1.xls
Verdict:
No threats detected
Analysis date:
2026-04-13 13:05:08 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Verdict:
Legit
File type:
application/vnd.ms-excel
Has a screenshot:
False
Contains macros:
False
Gathering data
Threat name:
Document-Office.Exploit.CVE-2026-21509
Status:
Malicious
First seen:
2026-04-13 12:50:11 UTC
File Type:
Binary (Archive)
Extracted files:
2
AV detection:
6 of 38 (15.79%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Behaviour
Checks processor information in registry
Enumerates system info in registry
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Please note that we are no longer able to provide a coverage score for Virus Total.

YARA Signatures


MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:OLE_LNK_InternetExplorer_IDLIST_Suspicious
Author:node5
Description:Detects OLE-embedded LNK with Internet Explorer IDLIST containing suspicious WebDAV/UNC/file:// strings within item boundaries

File information


The table below shows additional information about this malware sample such as delivery method and external references.

Comments